CN103253295A - Device for secondary energy management in steering column assembly - Google Patents
Device for secondary energy management in steering column assembly Download PDFInfo
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- CN103253295A CN103253295A CN2013100501212A CN201310050121A CN103253295A CN 103253295 A CN103253295 A CN 103253295A CN 2013100501212 A CN2013100501212 A CN 2013100501212A CN 201310050121 A CN201310050121 A CN 201310050121A CN 103253295 A CN103253295 A CN 103253295A
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- China
- Prior art keywords
- support
- vehicle
- vehicle cross
- energy absorbing
- cross assemble
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D1/00—Steering controls, i.e. means for initiating a change of direction of the vehicle
- B62D1/02—Steering controls, i.e. means for initiating a change of direction of the vehicle vehicle-mounted
- B62D1/16—Steering columns
- B62D1/18—Steering columns yieldable or adjustable, e.g. tiltable
- B62D1/19—Steering columns yieldable or adjustable, e.g. tiltable incorporating energy-absorbing arrangements, e.g. by being yieldable or collapsible
- B62D1/195—Yieldable supports for the steering column
Abstract
A pencil brace is incorporated into a cross car assembly of an automotive vehicle as a secondary energy absorption device to assist in managing the energy and controlling the column stroke due to a collision.
Description
Technical field
Present invention relates in general to energy absorbing device and system for self-propelled vehicle.More particularly, the present invention relates to for the energy absorbing device of controlling the energy in the steering column of motor vehicle.
Background technology
In self-propelled vehicle, Steering gear is designed to crumple in collision process, is delivered to the vehicle driver's of direction of operating dish impact force with minimizing.Yet, Steering gear with and on driver airbag also can be used in the vehicle driver be constrained to the degree that stops the vehicle driver to contact vehicle windscreen.Provide known steering column assembly deformable collision characteristic and the design of this energy dissipation that many variations are arranged.For example, many steering column assemblies are set in response to the crumple of Steering gear Steering gear be discharged from its supporting structure.This crumple when applying power owing to head-on crash and to bearing circle, the vehicle driver takes place.In head-on crash, for alleviating injury, must be by any or whole constrainer as a constrained system part, for example safety strap, safety air bag and Steering gear are controlled occupant's energy.Constrainer must reduce collision injury under the friction speed at vehicle design, and for the occupant of the various scale of constructions provides safety, and no matter they are or do not fasten the safety belt.The steering column assembly of deformable and crumple is usual design example.Some different expression form of these assemblies comprises, for example, disconnects axle assembly (breakaway shaft assembly), the capsule that breaks (breakaway capsules) and energy absorbing band (energy absorption straps).Be 5,052,715,4,627 referring to the patent No., 306,5,820,163,5,070,741,5,085,467,4,086,825 US Patent, it has transferred the application's cessionary all, and its full content is by incorporating the application into reference to the mode of quoting.
In many post assemblies, comprise those that incorporate the application into, top rake shape support (upper rake bracket) or strap (straps) can be used as one-level energy absorbing and control setup.When collision, under the load impact that the external force transmission that is applied to vehicle cross assemble (cross car assembly) comes, the shape support is harrowed on top and/or strap will be out of shape and bending.
The displacement of Steering gear or slip are called post stroke (column stroke) when head-on crash.Particularly, the post stroke is the distance measurements that Steering gear is slided before by energy absorbing and control setup prevention, and this distance can change between vehicle scheme and steering column assembly.The post stroke can be subjected to the influence of several factors, design as vehicle, automotive occupant system when collision does not still fasten the safety belt, the vehicle driver is (about 5 feet 10 inches of the 50th hundredths, 185 pounds) the still automotive occupant of the 5th hundredths (about 5 feet 4 inches, 105 pounds) (based on the approximate value of the aviation value of general crowd's standard heights and body weight).As will be understood by the skilled person in the art, the height of given automotive occupant and weight, as can be known or can calculate when collision average level the occupant who fastens the safety belt compare the much power on the Steering gear that is applied to the occupant who does not fasten the safety belt of average level.When the vehicle driver fastens the safety belt, because seatbelt can be used for the constraint vehicle driver, generate big post stroke so that the vehicle cross assemble of controlling energy with seatbelt is desirable.Therefore alternatively, when the vehicle driver does not fasten the safety belt and retrain by safety strap, it is desirable to limit the post stroke with the constraint vehicle driver and so reduce the mutual action of vehicle driver and vehicle windscreen.For example, when the generation vehicle driver contacts Windshield in the crash tests under the crash mode of not fastening the safety belt, this expression, with respect to collision impact and other indirect factors, the post stroke is excessive, and the power that contacts bearing circle down to the vehicle driver in response to the initial head-on crash that collides is not controlled effectively.The existing energy absorbing device that this explanation is adopted at present is in its design limit.Therefore, controlling and limiting the amount of post stroke in order to control better in the effort of impact energy, it is desirable to, be the 50th percentum automotive occupant restriction post stroke and be that the automotive occupant of the 5th percentum keeps reaching balance between chest acceleration/accel and the deflection simultaneously, and the control impact energy absorbs so that its automotive occupant that is suitable for simultaneously fastening the safety belt and does not fasten the safety belt.Therefore need provide the secondary energy absorbing device further to assist control and dissipation vehicle driver and the kinetic energy of Steering gear in collision process.Also need to provide the design of secondary energy absorbing device, this design is adapted to different vehicle schemes, is easy to make and be integrated into vehicle and manufacturing and use meet cost benefit.
Summary of the invention
Under the situation of serious head-on crash, use secondary energy absorbing and control setup that extra energy control is provided, with the impact of the butt strength that alleviates vehicle driver and constrained system, this will be useful.Generally, one-level energy absorbing and control setup will at first be out of shape, secondary energy absorbing and control setup distortion and crooked then, the energy during with further dissipation vehicle driver butt constrained system.
According to different exemplary embodiments, instruction of the present invention provides a kind of support for the vehicle cross assemble with longitudinal axis (pencil brace), and this support has the height of the assembly that is enough to abut to the vehicle cross assemble; Be enough to cross over the width of vehicle cross assemble predetermined portions; And the shape that is enough to bear predetermined impact load, this shape comprises one or more parts of the vehicle structure assembly that is suitable for being connected to the vehicle cross assemble, wherein support be used for stoping the vehicle cross assemble first assembly longitudinally axis move.
Instruction of the present invention further provides a kind of support, wherein first assembly of vehicle cross assemble is compressed stent (compression bracket), the vehicle structure assembly is one group of vehicle cross beam seat (beam shoes), wherein the vehicle cross assemble further comprises axis of a cylinder (column shaft), upper shaft sleeve, lower post support (lower column bracket), and top rake shape support, wherein, upper axis and upper sleeve partly and rotatably center on axis of a cylinder, and can be with respect to the telescopically crumple of vehicle cross assemble bottom, wherein compressed stent is connected to top rake shape support partly to center on upper sleeve, and its middle and upper part rake shape support is fixed to vehicle cross beam seat, and wherein the lower post support is fixed to vehicle cross beam seat.
Instruction of the present invention further provides a kind of support, wherein the vehicle cross assemble comprises one-level impact energy absorbing structure, this structure is configured to distortion and crooked under the load impact in the post stroke, and wherein, support is configured to distortion and crooked under load impact when existing not by the excessive post stroke of one-level impact energy absorbing structure control.
Instruction of the present invention further provides a kind of support, wherein one-level impact energy absorbing structure comprises at least one fixedly capsule (mounting capsule) and at least one strap, this at least one fixedly capsule be configured to distortion and crooked under the load impact in the post stroke.
Instruction of the present invention further provides a kind of support, and wherein the longitudinal axis of support and axis of a cylinder is fixed to the vehicle cross assemble angledly, and wherein this angle further promotes the butt of first assembly of support and vehicle cross assemble in when collision.
According to different exemplary embodiments, instruction of the present invention provides a kind of vehicle cross assemble, and it comprises the axis of a cylinder that is arranged in upper shaft sleeve, and top rake shape support is installed to vehicle support structures with axis of a cylinder; Be used for when vehicle frontal collision, being out of shape the allowing post stroke and control at least one one-level energy absorbing and control setup of collision energy; Be used for as secondary energy absorbing and control setup and be used for after one-level energy absorbing and control setup distortion, stoping or limiting the support of post stroke.
Instruction of the present invention further provides a kind of vehicle cross assemble, wherein, when collision, head-on crash produces one or more power, wherein at least one one-level energy absorbing and control setup are according to the load of setting and at first distortion of distance, and support is out of shape according to any dump energy then.
Instruction of the present invention further provides a kind of vehicle cross assemble, and wherein, support is installed to vehicle support structures directly or indirectly.
Instruction of the present invention further provides a kind of vehicle cross assemble, wherein use at least one one-level energy absorbing and control setup that compressed stent is installed to top rake shape support, and wherein, when applying power, the occupant discharges at least one one-level energy absorbing and control setup.
Instruction of the present invention further provides a kind of vehicle cross assemble, wherein, in case the one-level energy absorbing device has reached the preset distance with compressed stent, support stops the movement of compressed stent and the limited movement that support is out of shape to allow compressed stent, and this preset distance limits the post stroke that takes place before the compressed stent bump support.
Instruction of the present invention further provides a kind of vehicle cross assemble, wherein, support is installed as and the spaced apart preset distance of compressed stent, and this preset distance limits the post stroke that takes place before the compressed stent bump support.
Instruction of the present invention further provides a kind of vehicle cross assemble, wherein, with certain angle excursion support is installed.
Instruction of the present invention further provides a kind of vehicle cross assemble, and wherein support only clashes into compressed stent in the post stroke.
Instruction of the present invention further provides a kind of vehicle cross assemble, and it further comprises two the one-level energy absorbing and the control setups that comprise capsule and strap.
According to various exemplary embodiments, instruction of the present invention provides a kind of method of controlling the post stroke in the vehicle cross assemble when head-on crash, this method comprises the step that absorbs the head-on crash energy by one-level energy absorbing and control setup, and this one-level energy absorbing and control setup are configured to be out of shape when the occupant applies power; Absorb the head-on crash energy by support, this support is used for as secondary energy absorbing and control setup and is used for stoping or restriction post stroke, and distortion exceeds any dump energy of one-level energy absorbing device with control.
Instruction of the present invention provides a kind of method, it further comprises the top rake shape support that at least one one-level energy absorbing and control setup is installed to the vehicle cross assemble, wherein, in case the one-level energy absorbing device has reached the preset distance with compressed stent, then discharge at least one one-level energy absorbing and control setup, this preset distance limits the post stroke that produces before the compressed stent bump support.
Instruction of the present invention provides a kind of method, and it further comprises the movement that stops compressed stent by support, perhaps allows the limited movement of compressed stent when support is out of shape.
Extra purpose and the advantage of instruction of the present invention will be partly articulated in the following description, and part is apparent in explanation, perhaps can arrive by the learning by doing of instruction of the present invention.By key element and the combination thereof that particularly points out in the claim, can realize and reach various purposes and the advantage of instruction of the present invention.
Should be appreciated that aforementioned general description and following detailed description all only are exemplary and indicative, is not the restriction to instruction of the present invention.
The accompanying drawing of including in and constituting this specification sheets part shows the embodiment of instruction of the present invention, and is used from the principle of explaining instruction of the present invention with explanation one.
Description of drawings
At least part of feature and advantage will become apparent from following and the specific embodiment that it conforms to, and this explanation should consider with reference to accompanying drawing, wherein:
Fig. 1 is the transparent view of exemplary embodiment of vehicle cross assemble that comprises the self-propelled vehicle of the energy absorbing device of making according to instruction of the present invention;
Fig. 2 is the upward view of exemplary embodiment of the vehicle cross assemble of Fig. 1;
Fig. 3 is another upward view of exemplary embodiment of the vehicle cross assemble of Fig. 1;
Fig. 4 is the lateral plan of exemplary embodiment of the vehicle cross assemble of Fig. 1;
Fig. 5 is the birds-eye view of exemplary embodiment of the vehicle cross assemble of Fig. 1;
Fig. 6 is the diagram that illustrates according to the exemplary embodiment of the support of instruction of the present invention;
Fig. 7 is another diagram of exemplary embodiment of the support of Fig. 6.
Relate to illustrated examples embodiment although below specify, it is much replaced, revises and changes will be apparent for those skilled in the art.Therefore, should broadly treat claimed theme.
The specific embodiment
Now will be at length with reference to various embodiment, its example is with shown in the drawings.The exemplary embodiment that illustrates not is in order to limit the present invention.On the contrary, the present invention is intended to cover to substitute, revises and equivalent.
In power actuated vehicle, Steering gear typically is connected to the supporting structure that is fixed to vehicle structure rigidly.Go out as shown in fig. 1, vehicle cross assemble 10 can be fixed to vehicle support structures, for example shown vehicle rood beam 12.Vehicle support structures can be any structure assembly of assisting vehicle structure to reinforce, and is preferably laterally arrangement in vehicle, and therefore is not limited to the exemplary vehicle rood beam 12 shown in the accompanying drawing openly.Can predict, in certain exemplary embodiments, vehicle cross assemble 10 can be connected to other vehicle support structures as those skilled in the art with understanding.In the illustrated embodiment, help being connected of vehicle cross assembles 10 and vehicle rood beam 12 by one group of vehicle cross beam seat 14,16, each closely assembles vehicle cross beam seat 14,16 and bears against vehicle rood beam 12.Can should organize vehicle cross beam seat 14,16 by one or more known fastening devices and be fixed to vehicle rood beam 12.As used herein, term " fastener ", " fastening device " or its variant refer to any fastener known in the art, include but not limited to adhesives, pin, M8 fastener, screw, bolt, clip and support, it is denoted as " f " in the accompanying drawings.Vehicle cross beam seat 14,16 can be used as top rake shape support, in order to vehicle cross assemble 10 is connected to vehicle rood beam 12.Vehicle cross beam seat 14,16 can further promote being connected of other vehicle assemblies for example and other vehicle support structures or vehicle cross assemble 10 and fixing.Vehicle cross beam seat 14,16 provides stable and supporting for surrounding structure.Vehicle cross beam seat 14,16 can be made by various sturdy material, includes but not limited to steel, aluminium or poly-mer.Can predict, can use other top rake shape supports or structure fastening assembly that vehicle cross assemble 10 is fixed to vehicle support structures, vehicle rood beam 12 for example, vehicle cross beam seat 14,16 is as the open of connection and anchor fitting and do not mean that restriction.
Shown in Fig. 1-5, vehicle cross assemble 10 comprises that axis of a cylinder 20 is connected to the bearing circle (not shown) for the upper shaft sleeve 22 of butt axis of a cylinder 20 integrally.Upper shaft sleeve 22 partly and rotatably around axis of a cylinder 20, axis of a cylinder 20 can be positioned at upper shaft sleeve 22.In the specific embodiment of instruction of the present invention, upper shaft sleeve 22 can be with respect to the telescopically crumple of bottom of vehicle cross assemble 10, and the bottom of vehicle cross assemble 10 comprises lower post support 26 and axis of a cylinder 20 bottoms.As what it will be apparent to those skilled in the art that, the assembly around the vehicle cross assemble 10, particularly axis of a cylinder 20 and comprise axis of a cylinder 20 can adopt various structure known in the art, and therefore, the disclosure does not mean that restriction.
In the specific embodiment of instruction of the present invention, for example using, known fasteners f is fixed to vehicle cross beam seat 14,16 with lower post support 26.The structure of lower post support 26 is well known in the art, its further specify think at this unnecessary.When axis of a cylinder 20 was fixed to lower post support 26, the lower end of axis of a cylinder 20 can be connected to vehicle cross beam seat 14,16.Known fasteners f is fixed to one group of vehicle cross beam seat 14,16 with vehicle cross assemble 10 by for example using, and lower post support 26 is further stablized vehicle cross assemble 10.
Structural constituent, for example the compressed stent shown in Fig. 1-4 24 partly centers on axis of a cylinder 20 and is positioned at close upper shaft sleeve 22.Shown in the exemplary embodiment of Fig. 1-4, top rake shape support 30 be connected to compressed stent 24 with partly around axis of a cylinder 20 and upper shaft sleeve 22, and lead between the end of bearing circle (not shown) at lower post support 26 and axis of a cylinder 20 along the axis of axis of a cylinder 20.This area that is configured in of top rake shape support 30 is known, and it is unnecessary that its further instruction is thought at this.As will be understood by the skilled person in the art, can predict, other structural constituents can be incorporated into the vehicle cross assemble to replace compressed stent of the present invention.
Top rake shape support 30 assists to promote being connected of vehicle cross assemble 10 and vehicle rood beam 12 well known to a person skilled in the art mode.For example, go out as shown in FIG., can use known fasteners f that shape support 30 is harrowed on top and be connected to vehicle cross beam seat 14,16.Top rake shape support 30 can also be connected to compressed stent 24 partly to center on and the further vehicle cross assemble 10 of stablizing.By numerous point of connection are provided, top rake shape support 30 promotes that further vehicle cross assemble 10 is connected with the various of vehicle assembly (not shown), for example supporting structure and mechanical drive.According to the specific embodiment of instruction of the present invention, the combination that vehicle cross beam seat 14,16 cooperates tops rake shape supports 30 and lower post support 26 is jointly stable and be fixed to vehicle support structures with vehicle cross assemble 10.Can predict, can use other structural constituents to help stable and supporting vehicle cross assemble.
Top rake shape support 30 can be connected to energy absorbing and control setup, for example fixedly capsule and energy absorbing band.Mention briefly as above, if head-on crash takes place, be subjected under the load impact of self collision that energy absorbing device will be out of shape the kinetic energy with the collision that dissipates in the post stroke.
Shown in Fig. 1-3, one group fixedly capsule 32,34 can be connected to top rake shape support 30 near the edge of bearing circle (not shown), and spaced apart on the rake shape support 30 of top, typically in the both sides of axis of a cylinder 20.Fixedly capsule 32,34 can be configured to be fitted in around the edge of top rake shape support 30, for example has or do not have clamp, contraction support or the clip of known fasteners f.For example, fixedly capsule 32,34 can use known fasteners f to be assembled into as shown in the figure with going out and be fixed to the edge that shape support 30 is harrowed on top.Fixedly capsule 32,34 is designed to keep fixing when collision, like this, allow that top rake shape support 30 moves and also moves with respect to vehicle cross beam seat 14,16 with respect to fixing capsule, with by allowing that a certain amount of post stroke absorbs collision energy and dissipation energy.Can predict, other fixed sealing shell structure also can use and be fitted in around rake shape support 30 edges, top, and exemplary embodiment of the present invention does not also mean that restriction.
Fixedly capsule 32,34 can be used for the one group strap 36,38 of fixed in position on vehicle cross beam seat 14,16 and top rake shape support 30. Strap 36,38 can extend beyond the edge of fixed support 30, so that strap 36, each end of 38 form ring-type, it will absorb from load and the energy that is out of shape.Strap 36,38 can be designed as any known structure, is shown in Figure 4 for carrier bar, and carrier bar will be out of shape to dissipate the energy of self collision in the post stroke under impacting.Can predict, can use other strap structures so that strap 36,38 is positioned at fixedly around capsule 32,34, top rake shape support 30 and the vehicle cross beam seat 14,16, exemplary embodiment of the present invention is not meaned restriction.In operation, produce in collision under the situation of load impact, when vehicle cross assemble 10 was shifted in collision, fixedly capsule 32,34 can be out of shape under load impact.In case fixedly capsule 32,34 has reached the peak load ability, top rake shape support 30 can be from fixing capsule 32,34 releases (for example by collapse out under pressure or rupture), thereby load impact is delivered to strap 36,38.Because strap 36,38 bears load, it can be out of shape or be crooked, harrow shape support 30 along axis of a cylinder axis shift and slip to allow top, and relatively little being displaced to of vehicle cross beam seat 14,16 experience does not have displacement.In this slided, fixedly capsule 32,34 can keep mooring to arrive vehicle cross beam seat 14,16.
Except one-level energy absorbing and control setup, for example capsule, strap and support, secondary energy absorbing and control setup also can be incorporated into vehicle cross assemble 10, so that extra energy absorbing to be provided when the collision.To such an extent as to when the too violent impact load of collision absorbs greater than primary energy and control setup can absorb and control the time, secondary energy absorbing and control setup are useful especially.Particularly, the secondary energy absorbing device can be assisted the control impact energy in the post stroke, the amount of the post stroke that produces during with help control head-on crash.Therefore, one-level energy absorbing and control setup, fixedly capsule 32 of the present invention, 34 and strap 36,38 is for example accepted the initial stage impact load and by distortion with allow that the post stroke absorbs its part at least.Yet under many circumstances, impact load is manageable much larger than one-level energy absorbing and control setup, and wherein, these devices will be deformed to the maximum possible degree in the early stage, for example, reaches or exceeds assumed load or the distance of about 100mm for example.
Therefore, according to the specific embodiment of instruction of the present invention, support 40 can be incorporated in the vehicle cross assemble 10 as the secondary energy absorbing device, in order to assist the control impact energy in the post stroke.Support 40 is used for " catching " at the post stroke bottom surface of compressed stent 24, and under the situation of the power of given value, distortion and crooked energy with secondary collision in absorbing from self-propelled vehicle under load impact.For example, example above continuing, when strap 36,38 bore the load of increase, the top rake shape support 30 that is connected to compressed stent 24 can continue to slide along the axis of a cylinder axis, abuts to support 40 up to compressed stent 24 before strap 36,38 extends fully and is out of shape.Support 40 is designed to absorb by strap 36,38 and transmits the next power from the initial stage impact, can also bear the impact that contacts any dump energy of bearing circle from the vehicle driver simultaneously.In this way, support 40 can be more firm than one-level energy absorbing and control setup, reason is that support 40 can bear the load impact of the initial stage collision that is come by one-level energy absorbing and control setup transmission, for example, and from the power of vehicle driver's collision direction dish of not fastening the safety belt.Especially for the passenger who does not fasten the safety belt, support 40 can be used for restriction post stroke, to prevent the vehicle driver, the vehicle driver who does not particularly fasten the safety belt, vehicle impact Windshield.
Favourable post stroke characteristic based on many different vehicle (or scheme) characteristics, Steering gear and when impacting, support can be designed as several different vehicle scheme that is adapted to.Wherein, adjust support 40 operable characteristics for given vehicle (or scheme) and can comprise the size and dimension of support 40, its manufactured materials and the position in the vehicle cross assemble and layout.Excellent some factor of preferably considering relevant energy absorbing and control of suitable support design that is used for given vehicle (or scheme), for example, in the two safety, vehicle driver's percentile and the different orders of severity of collision of when collision system or the automotive occupant of not fastening the safety belt.Many times, this design is called adjustment.As used in the present invention, term " adjustment " and variant thereof refer to, based on various passenger types and various collision scene, for support 40 is regulated in the given Steering gear design in the given vehicle scheme.Usually, the adjusting of support 40 occurs in support 40 and is integrated into before the vehicle.Yet, can predict, a certain amount of adjusting can occur in support 40 and be integrated into after vehicle or the vehicle cross assemble.
According to the preassigned parameter of scheme, the design goal that it preferably includes simultaneously to the occupant who fastens the safety belt and do not fasten the safety belt can be adjusted into support 40 post of aequum stroke is provided in specified scheme.Support 40 also can be adapted to its different steering column assemblies of integrating with, and adjusts according to different vehicle (or scheme).Support 40 can be adjusted into the different structure in the butt vehicle cross assemble 10, and for example compressed stent 24, to limit the post stroke when needed.Support 40 can be adjusted at certain hour or in collision process after some event, for example one-level energy absorbing and control setup have reached it to after the maximum capacity of load impact or produced for given impulsive force after the post stroke of scheduled volume, bear impact load.For example, by support 40 is placed vehicle cross assemble 10 bottoms or near it and with support 40 be set to the post stroke only enter butt with the movement of limit compression support 24 (and therefore limiting the post stroke) with compressed stent 24 unless up to and predetermined impulsive force cause that support 40 will be out of shape, support 40 can be adjusted in withstand shocks load and the post stroke subordinate phase behind head-on crash and be out of shape.In the various embodiment of instruction of the present invention, compare with strap 36, the needed power of 38 distortion with causing fixedly capsule 32,34, make the support distortion need bigger power.Except the arrangement of support, position, size and shape that can also be by changing support and the material of making it are realized the adjustment of support 40.Can also use diameter and the shape of cross section of support 40, and about the described support 40 angle of deviation O of Fig. 4, adjust support 40.Angle O can by be arranged on the structure that is parallel to steering shaft 20 axis, the basic vertical mitered of support 40 on for example vehicle rood beam 14,16 forms.Can adjust angle O as required to be adapted to different vehicle scheme or steering column assembly.Adjust support and allow that vehicle designers selection support 40 abuts to the post path increment that produces before the compressed stent 24, and the amount that makes the required power of support 40 distortion.
In the exemplary embodiment of Fig. 1-5, use known fastener f that support 40 is connected to vehicle cross beam seat 14,16.Can predict, support 40 can be positioned at the multiple position that is different from the exemplary position shown in Fig. 1-5 on the vehicle cross beam seat 14,16.---the unshowned different vehicle support structures of the present invention---perhaps stiff member of vehicle cross assemble 10 is alternatively anticipated support 40 is connected to vehicle rood beam 12 in instruction of the present invention, and for example the lower post support 26.Flat end E(by support 40 is referring to, Fig. 6 for example) help the connection of support 40 in conjunction with known fasteners f.Can predict, in other exemplary embodiments, the end shape of support and structure can change, and it also can promote being connected of support and vehicle structure.According to the different embodiment of instruction of the present invention, flat end E can have the hole, and the connection of support 40 and different vehicle support structures and fixing can be assisted to promote in this hole.According to the design of support with and the vehicle or the vehicle cross assemble that are attached to, the size in the hole that comprises on the flat end E, shape and quantity can change.The setting of support 40 in vehicle cross assemble 10 is usually to consider in the actual design of determining before being placed into vehicle, and can depend on the relevant many factors of vehicle cross assemble design, the design of vehicle, manufacturing and model and with above-mentioned energy absorbing and relevant other factors of control, comprise consider under the various situations, as vehicle driver system at least and do not fasten the safety belt and at least the optimal impact energy of vehicle driver's different hundredths control.
Therefore, according to support 40 final position of placing in vehicle cross assemble 10, support 40 is configured to control at least in part the amount of movement of specific components of vehicle cross assemble 10 and the amount of therefore controlling the post stroke.Shown in Fig. 1-4, support 40 can be harrowed between shape support 30 and the lower post support 26 on top along the longitudinal axis of axis of a cylinder 20.For example, in the specific embodiment of instruction of the present invention, be shaped as follows and adjust support 40, namely in head-on crash with compressed stent 24 butts so that the distance that support 40 can limit compression support 24 slides along vehicle cross assemble 10 axis after the distortion of one-level energy absorbing and control setup.Fixing capsule 32,34 so strap 36,38 no longer can withstand shocks load and distortion allowing compressed stent 24 after the axis of steering shaft 20 moves down, the position control compressed stent 24 of support 40 distance of how far can sliding along the axis of axis of a cylinder 20.In the impact process of vehicle driver's collision direction dish, behind compressed stent 24 butts, support 40 is designed to or keeps compressed stent 24 and limit the post stroke, under the enough big power of bearing circle along with the impact load distortion that increases and crooked, thereby post stroke and the Steering gear of allowing increase move.
Because support 40 can be installed in different appropriate locations and can have various shape, size and material along vehicle cross beam seat 14,16, support 40 can be adjusted between scheme, with the energy value of adjusting support 40 and the post stroke of allowing.For example, if the occupant who is in the 5th hundredths only needs the post stroke of 25mm, can adjust support 40 on the basis that amount that may generative power to the vehicle driver who is in the 50th hundredths is estimated so, thereby will abut to the post stroke that energy that compressed stent 24 is in the 50th hundredths occupant with control is controlled tolerance in which of 25mm stroke and spatial point by regulating support 40 time.Similarly, can regulate support 40 on the basis that the value of issuable power when being in the vehicle driver of the 5th hundredths is estimated, thereby will abut to the post stroke that energy that compressed stent 24 is in the 5th hundredths occupant with control is controlled tolerance in which of 25mm stroke and spatial point by regulating support 40 time.
When vehicle driver's direction of operating dish, one-level energy absorbing and control setup can be out of shape to prevent the injury to automotive occupant, and support 40 can resist and absorb extra collision energy step by step then, provides controlled antagonistic force to the vehicle driver.Particularly, in the post stroke, after the distortion of any one-level energy absorbing and control setup, compressed stent 24 butt supports 40 also apply load to it.Support 40 will stop the movement of compressed stent 24, perhaps will under pulling force, be out of shape and load-bearing to absorb extra collision energy.In case reach the maximal workload of self collision, Steering gear 24 will no longer include stroke.Therefore, support 40 provides the controlled opposing of bearing circle to the vehicle driver, absorb energy step by step preventing bearing circle to the excessive antagonistic force of vehicle driver, and be used for preventing that the mode that the vehicle driver contacts Windshield from retraining vehicle driver (and the vehicle driver who does not especially fasten the safety belt).
Generally, support 40 is designed to can be simply and enough supportings, installation strength and stability are provided at an easy rate, and can be adapted to various steering column assemblies and vehicle scheme and do not lose functional.Therefore, except the characteristic of having set forth, support 40 can also be adjusted into has height h, top from the bottom of flat distal end E to core c records h, it is enough to abut to first assembly of vehicle cross assemble 10, for example compressed stent 24, and don't any other assembly of butt vehicle cross assemble, for example fastener or other structural constituents.For example, when bumping, support 40 can be in the post stroke butt compressed stent 24, and can partly control and limit compression support 24 and the slip that is connected to the Steering gear part of compressed stent 24, and further assist dissipation energy.Support 40 can have width w, records w between the outer end of each flat distal end E, and it is enough to the predetermined portions across vehicle cross assemble 10, so that it can be installed to the fixed part of vehicle cross assemble 10 or vehicle support structures.For example, the width of support 40 can be designed as allows that support 40 can be installed to the structural constituent of appointment rightly, and the vehicle cross beam seat 14,16 shown in the figure is for example crossed over the width of vehicle cross assemble 10 simultaneously.
The material of support 40 can be integrated into the adjustment process of support 40.Though the exemplary support 40 that illustrates has given shape, support can selectively have the structure of U-shaped, V-type, circular arc, square or other corner bends.Can select the size and dimension of support 40, cross over the specific components of vehicle cross assemble to allow support, with the specific components that stops the vehicle cross assemble (for example, compressed stent 24) movement, and connect one or more vehicle structure assembly, for example vehicle rood beam 12 or vehicle cross beam seat 14,16.
Can predict, in the optional structure of steering column assembly, according to the support of instruction of the present invention can be varying sized, shape, position and layout, with and manufactured materials, so that actv. energy absorbing and control to be provided to the specific vehicle that it was positioned at.
Although instruction of the present invention is open to help better to understand instruction of the present invention in the mode of exemplary embodiment, should be appreciated that instruction of the present invention can implement by different way and do not break away from the principle of this instruction.Therefore, instruction of the present invention should be understood to comprise the possible embodiment of the institute that can implement and don't break away from listed this instruction principle of claim.
Be the purpose of this specification sheets and claims, unless otherwise, all the expression quantity, percentum or ratios the numeral and in specification sheets and claim employed other numerical value should be understood in all cases by the term " about " correction.Therefore, unless contrary instructions, the digital parameters of setting forth in explanatory note and the claim is approximate value, and its desirable characteristics of can instruction according to the present invention seeking to obtain changes.At least, and the application of unrestricted doctrine of equivalents to the claim protection domain, each numerical parameter should and use the common method of rounding up to explain according to described significance bit numeral at least.
Should be noted that as employed in this specification sheets and the claims singulative " ", " a certain " etc. comprise plural form, unless clearly also in so many words be restricted to an object.Therefore, for example, mention " sensor " and comprise two or how different sensors.As used herein, term " comprises " and grammatical variants is intended to non-limitingly, like this, listed items is not other similar items can replace or add list-item for getting rid of in tabulation.
For those skilled in the art apparently, can make various modifications and variations and not break away from the scope that the present invention instructs system and method for the present disclosure.By considering this specification sheets and put into practice instruction disclosed by the invention that other embodiment of the present disclosure will be apparent to those skilled in the art.This specification sheets and embodiment of the present invention are interpreted as only for exemplary.
Claims (17)
1. support that is used for having the vehicle cross assemble of longitudinal axis is characterized in that this support comprises:
Be enough to abut to the height of first assembly of vehicle cross assemble;
Be enough to cross over the width of the predetermined portions of vehicle cross assemble; And
Be enough to bear the shape of predetermined impact load, this shape comprises one or more part of the vehicle structure assembly that is suitable for being connected to the vehicle cross assemble,
Wherein, support be used for to stop the vehicle cross assemble first assembly longitudinally axis move.
2. support according to claim 1 is characterized in that, first assembly of vehicle cross assemble is compressed stent, and the vehicle structure assembly is one group of vehicle cross beam seat,
Wherein, the vehicle cross assemble further comprises axis of a cylinder, upper shaft sleeve, lower post support and top rake shape support,
Wherein, upper shaft sleeve is partly and rotatably around axis of a cylinder, and can be with respect to the telescopically crumple of bottom of vehicle cross assemble,
Wherein, compressed stent be connected to top rake shape support with partly around upper shaft sleeve, and its middle and upper part rake shape support is fixed to vehicle cross beam seat, and
Wherein, the lower post support is fixed to vehicle cross beam seat.
3. support according to claim 1 is characterized in that, the vehicle cross assemble comprises one-level impact energy absorbing structure, and it is configured to distortion and crooked under the load impact in the post stroke, and
Wherein, support is configured to distortion and crooked under load impact when existing not by the excessive post stroke of one-level impact energy absorbing structure control.
4. support according to claim 3 is characterized in that, one-level impact energy absorbing structure comprises at least one fixedly capsule and at least one strap, at least one fixedly capsule be configured to distortion and crooked under the load impact in the post stroke.
5. support according to claim 1, it is characterized in that, the longitudinal axis of support and axis of a cylinder is fixed to the vehicle cross assemble angledly, and wherein, this angle further promotes the butt of first assembly of support and vehicle cross assemble in collision process.
6. a vehicle cross assemble is characterized in that, comprises:
Be arranged in the axis of a cylinder of upper shaft sleeve, top rake shape support is installed to vehicle support structures with axis of a cylinder; Be installed to axis of a cylinder and be installed to the top rake shape support of vehicle support structures directly or indirectly;
At least one one-level energy absorbing and control setup, it is configured to be out of shape to allow the post stroke and to control collision energy in the head-on crash of vehicle;
Support, it is used for as secondary energy absorbing and control setup, and is used for stoping after one-level energy absorbing and control setup distortion or restriction post stroke.
7. vehicle cross assemble according to claim 6 is characterized in that, support is installed to vehicle support structures directly or indirectly.
8. vehicle cross assemble according to claim 6 is characterized in that, when collision, head-on crash produces one or more power,
Wherein, at least one one-level energy absorbing and control setup are according to the load of setting and at first distortion of distance, and support is out of shape according to any dump energy then.
9. vehicle cross assemble according to claim 8, it is characterized in that, use at least one one-level energy absorbing and control setup that compressed stent is installed to top rake shape support, wherein, when the occupant applies power, discharge at least one one-level energy absorbing and control setup.
10. vehicle cross assemble according to claim 9, it is characterized in that, in case the one-level energy absorbing device has reached the preset distance with compressed stent, support stops the movement of compressed stent and the limited movement that support is out of shape to allow compressed stent, and this preset distance limits the post stroke that takes place before the compressed stent bump support.
11. vehicle cross assemble according to claim 6 is characterized in that, support is installed as and the spaced apart preset distance of compressed stent, this preset distance limits the post stroke that takes place before the compressed stent bump support.
12. vehicle cross assemble according to claim 11 is characterized in that, with certain angle excursion support is installed.
13. vehicle cross assemble according to claim 11 is characterized in that support only clashes into compressed stent in the post stroke.
14. vehicle cross assemble according to claim 6 is characterized in that, further comprises two one-level energy absorbing and control setups that comprise capsule and strap.
15. the method for the post stroke in the control vehicle cross assemble when head-on crash is characterized in that described method comprises:
Absorb the head-on crash energy by one-level energy absorbing and control setup, this one-level energy absorbing and control setup are configured to be out of shape when the occupant applies power;
Absorb the head-on crash energy by support, this support is used for as secondary energy absorbing and control setup and is used for stoping or restriction post stroke, and distortion exceeds any dump energy of one-level energy absorbing device with control.
16. method according to claim 15, it is characterized in that, further comprise the top rake shape support that at least one one-level energy absorbing and control setup is installed to the vehicle cross assemble, wherein, in case one-level energy absorbing and control setup have reached the preset distance with compressed stent, then discharge at least one one-level energy absorbing and control setup, this preset distance limits the post stroke that produces before the compressed stent bump support.
17. method according to claim 16 is characterized in that, further comprises the movement that stops compressed stent by support, perhaps allows the limited movement of compressed stent when support is out of shape.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US13/397,649 | 2012-02-15 | ||
| US13/397,649 US8702126B2 (en) | 2012-02-15 | 2012-02-15 | Device for secondary energy management in a steering column assembly |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103253295A true CN103253295A (en) | 2013-08-21 |
| CN103253295B CN103253295B (en) | 2017-03-01 |
Family
ID=48944982
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310050121.2A Expired - Fee Related CN103253295B (en) | 2012-02-15 | 2013-02-08 | Secondary energy control device and method for vehicle cross assemble |
Country Status (2)
| Country | Link |
|---|---|
| US (1) | US8702126B2 (en) |
| CN (1) | CN103253295B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2993109B1 (en) * | 2013-11-20 | 2018-02-14 | NSK Ltd. | Support device for steering bracket, and steering device |
| US9145176B1 (en) | 2014-06-27 | 2015-09-29 | Ford Global Technologies, Llc | Vehicle box reinforcing brace |
| GB2563000B (en) | 2017-05-30 | 2020-02-26 | Ford Global Tech Llc | A motor vehicle steering column assembly |
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Also Published As
| Publication number | Publication date |
|---|---|
| US20130207370A1 (en) | 2013-08-15 |
| CN103253295B (en) | 2017-03-01 |
| US8702126B2 (en) | 2014-04-22 |
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